<!DOCTYPE html>
<html lang="en">

<head>
    <META http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <meta charset="UTF-8">
    <title>Demo page</title>
    <script src="webcomponents-loader.js"></script>
    <link href="https://fonts.googleapis.com" rel="preconnect">
    <link crossorigin href="https://fonts.gstatic.com" rel="preconnect">
    <link href="https://fonts.googleapis.com/css?family=Roboto:300,400,500" rel="stylesheet">
    <link href="https://fonts.googleapis.com/css?family=Material+Icons&amp;display=block" rel="stylesheet">
    <link href="app.css" rel="stylesheet">
</head>

<body>
    <script src="app.js"></script>
</body>

</html>